ecoocc: Occurrence, co-occurrence and more

Generate random presence/absence matrix

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ec_generate_pa(nsit, nspc, probs, ...)

ec_order_pa(x, by = c("both", "site", "species"), decreasing = TRUE)

`nsit`	number of site (determine the number of rows).
`nspc`	number of species (determine the number of columns).
`probs`	numeric vector of probabilities presence of species. If there are less elements than species, then the vector is recycled and if there are more, the vector is truncated (see `rep_len()`)
`...`	further arguments passed on to `ec_pa()`.
`x`	a `pa` object or an R object to a coerced to one (see `ec_as_pa()`).
`by`	dimension along which the `pa` object should be ordered, default is set to "both".
`decreasing`	Should the sort order be increasing or decreasing? see `order()`.